It kicks arse, it really does. I'd recommend the RM100 to anybody but there is a catch; you'll end up spending a fortune on modules. Cheaper than new amps though. I've spent about $800 on modules so far.

It's gonna take me a while to extract the sound I'm looking for out of the Markus but I'm sure it's in there. The tone controls are weird, just like on a real Mesa. What I really want to find in there is Santana's lead tone on Abraxus, or something in that vein anyway. I'll get there I think, it's just gonna take some time with it.